that's the point , I am searching for sweet spot for how much i need go deep?
also another thing i was thinking on ..each time user folder accessed , filesystem need to go like : /var/www/cgi-bin/PROJECT/DB/1/2/3/123
what if i will put a link to DB in the root directory for faster access ? What do you think about that? /user_db/1/2/3/123
Thanks